Cam to Lifter Clearance

[Zach Gomulka]

Checked the cam to lifter clearance on AssHull's 1915 tonight... Minium is .050" (correct??), maximium is...??
AS41 Brazillian mag case, Engle 120 cam

Thanks!

[Fastbrit]

Minium is .050" (correct??), maximium is...??

.050 is fine, there is no real maximum... unless the lifter's punched right out of the case and is lying on the floor.

[richie]

some is enough

cheers richie,uk

[Zach Gomulka]

Cheers, gents!
We had already begun assembling the motor when I decided to check it out, and it's a good thing we did. After a LOT of lifter shuffling we got the 3-4 case half to nearly acceptable figures, .049" to .064". Both intakes were tighter than the exhausts(?). Decided to check on the 1-2 half and came up with very different numbers... After even more shuffling, the best numbers we could come up with was #2 intake and exhausts are a close .048"-.053", but the #1's are a tight .029"-.034"

What would you do? (what I want to hear is that we can have a little taken off the tops of the #1 lifter bores and call it a day )

Thanks!

[Fastbrit]

That would be fine and dandy. As Richie says, anything is enough, but I prefer to allow around 40thou, although there isn't really any reason why! For peace of mind, mill #1 and have done with it...

[Jim Ratto]

What would you do? (what I want to hear is that we can have a little taken off the tops of the #1 lifter bores and call it a day )

Thanks!

that's what you need to do. Berg sells a cutter you can run in a drill press or even a hand drill if you're careful.
Most high perf lifters are already thinner on head. Are you guys using stock VW lifters or Mahles or something?

[Zach Gomulka]

Stock VW (Brazil, I think).